Check if variant is Null or an array - vba

Question

I have a dynamic range that is being used to set a combobox in vba.
The range starts as A3 (which will contain nothing to start) and goes all the way to A3:A9999, depending on how many elements are in the range.
The code then pulls in the data from the range and stores it in a local variant.
My code in VBA is this:
If tempj <> Null Then
cmb_JobNum.List = tempj
End If
When there are 0 elements in the array, tempj = Null, so it does not attempt to set the list.
When there is 1 element in the array, tempj = [Value of cell], so it will set the list to that single element.
When there is 2 or more elements in the array, tempj is now an array, so trying to equate it to a single element throws a 'type mismatch' error. I have no clue how to update the code so that it doesn't get caught out by that error, since every time that equate is run it will crash.

Answer 1

You could try like this:
Dim i As Long
For i = LBound(tempj) To UBound(templ)
cmb_JobNum.AddItem tempj(i)
Next
This code will loop through your array and add every element in it to the combobox. Thus, if array is empy, then no elelements will be added, when there's >0 elements, then all of them will be added.

Answer 2

Here is an example using a dynamic named range to set the fill
Option Explicit
Public Sub test()
With ThisWorkbook.Worksheets("Sheet6") '<== change as appropriate
.ComboBox1.ListFillRange = .Range("dynRange").Address
End With
End Sub
dynRange formula added via name manager (Ctrl + F3)
=OFFSET(Sheet6!$A$3,0,0,COUNTA(Sheet6!$A:$A),1)
Using a worksheet change event to automatically update the combobox:
You could tie this into a Worksheet_Change event on the range A3:A9999 to update automatically the Combobox.
If tying to an event in the code pane of the sheet containing the combobox you could have the following:
Option Explicit
Private Sub Worksheet_Change(ByVal Target As Range)
If Not Intersect(Target, Range("A3:A9999")) Is Nothing Then
Application.EnableEvents = False
Me.ComboBox1.ListFillRange = ThisWorkbook.Worksheets("Sheet6").Range("dynRange").Address
Application.EnableEvents = True
End If
End Sub
Example code run:
Code pane for sheet containing Combobox:
Note:
This is assuming an ActiveX combobox but can easily be update for a Form Control ComboBox.
For a form control swop out lines and use:
With Shapes("Drop Down 2").ControlFormat '<== change to appropriate name
.ListFillRange = ThisWorkbook.Worksheets("Sheet6").Range("dynRange").Address
End With
Edit: For UserForm combobox you can populate in the initialize e.g.
Private Sub UserForm_Initialize()
cb1.RowSource = Sheet1.Range("dynRange").Address
End Sub

Answer 3

Figured it out
If VarType(tempj) <> 0 Then
If VarType(tempj) = 8 Then
cmb_JobNum.AddItem tempj
Else
cmb_JobNum.List = tempj
End If
End If